Marcelo Rios pulls a surprise.

AFP/Peter Muhly

Marcelo Rios of Chile hits a forehand in his semi-finals match against Andre Agassi at the Nasdaq in Key Biscayne. Rios surprised most when he later retired because of a leg injury with the match even after two sets.

Marcelo Rios of Chile hits a forehand in his semi-finals match against Andre Agassi at the Nasdaq in Key Biscayne. Rios surprised most when he later retired because of a leg injury with the match even after two sets.